Sharpening or dressing means for machine-knives and the like.



P. J. CONWAY. SHARPENING OR DRESSING MEANS FOR MACHINE KNIVES AND THE LIKE. APPLIUATIOH FILED APB. 22, 1914.

1,117,552,, Patented Nov. 17, 1914.

' herewith which show one form a large extentstill in many cases without ionrrn PATRICK JOSEPH CONWAY. OF KILMQRE, VICTORIA AUSTRALIA.

SHARPENINGOR DRESSING MEANS FOR MACHINE-KNIVES AND THE LIKE.

Specification of Letters Patent.

Patented Nov. 17, 191 1.

Application filed April 22, 1914. Serial No. 833,771.. 1

To all whom it may concern Be it known that I, PATRICK JOSEPH Corv- WAY, a subject of the King of Great Britain and Ireland, .&c., residing at Kilmore, in the State of Victoria, Commonwealth of Australia, have invented certain new. and useful Improvements in Sharpening or Dressing Means for Machine-Knives and the like; and I do hereby declare the followingto be a full, clear, and exact description of the in vention, such as will enable others skilled in the art to which it appertains to make and use the same. i The object of my invention is to provide improved apparatus for sharpening knife blades used on wheels ofcha tf cutting machines and on other machinery. Sharpening by; means of a hand tile or stoneis to practised but is laborious, slowand imperfect. My device is desirable by reason of its effectiveness, rapid action, and cheapness. p j

I use my devicenot only without taking the knives from the carrying wheel, but also moving the wheel from its machine. If I remove the wheel, leaving the knives on, the wheel will be temporarily held or supported as standing vertically or obliquely insome usual or suitable manner. My device also promotes safety.

I use a lever, sharpening bit, lever socket, and other parts, and will now proceed to explain my details, by reference to drawings of my c0nstruction.

Figure 1 is a front view of part of a fitted chatfcutter knife wheel, only one of the knives being shown. Fig.2 is an end elevation, the wheel being in vertical section. Fig. 3 is a plan in horizontal section showing some of the parts. Fig. partly sectional, of some parts as seen from the back of Fig. 1. Fig. 5 is a plan in horizontal section as in Fig. 3, but showing parts at a lower level.

The parts are not in cutting positions in Figs. land 2, and in these figures the scale is smaller than in Figs. 3 to 5. My sharpening bit is a removable two edged blade not shown in Fig. 4.

a indicates the rim of a machine wheel which has knife blades 1) each suitably mounted as by bolting to some suitable spoke. The cutting edge, 6 of the blade does not form an arc of a circle in some cases, but

4: is an elevation,

for any such divergence I make special provision. I can. provide at will instead of a sharpener a polishing or dressing bit on my lever, but in this description will allude for brevity to the sharpener.

c in Fig. 1 is any suitable clamp, having means, as screw (Z or the like, to fix the clamp to the wheel at any convenient part, as to rim a. i

c is a socket bearing arm extendingfrom the clamp with which it may be integral, and slotted longitudinally as at f, or likewise suited for the adjustment along it of a socket member it, extending from a swivel socket i which is adjusted to remain at a desired point on the lower part 9 of a lever, having an upper part 0, which is provided with adjustment and operating means, as one or more lateral handles 7 p ,-and a top handle 9. a The lever may be in one or more pieces, but as shown it has two main parts, 0 and 7, connected as by a transverse part 0 whichmay been the former, and have a slot 0 through which passes the top is (of reduced diameter) of part 9. Thetop is fixed in any desired adjustment as by the nut/c Part 9 has a collar 9 which is further men tioncd later. It carries a roller m which acts as an anti-friction member, and also as a rear support during the sharpening action.

it represents a wing nut by tightening which the shank of socket i is fixed in some desired adjustment along arm 6, without preventing the swiveling action of the socket. The latter action permits of radial movement of thelever,and that movement permits my sharpening'bit n to be swung to and fro in contact with the knife edge b. The radial movements are indicated by arrows in Fig. 1. j a I I provide a depression limiting adjustable stop j on part 9 by which to prevent undue lowering of the lever, which during the sharpening will be raised and lowered as may be required according to the position of edge I) so as to bring the sharpening bit a to the right height, while the lever is moved to and fro as per arrows in Fig. 1. During part of the movement the stop 1' can rest on arm 6; and there is the additional advantage that the stop prevents the transverse part 0 of the lever being lowered so far as to injure the blade edge 6 g is a supporting collar or the like on part 9, and m are distance pieces or washcarefully adjusting and 5.

ers used so that roller m may be suitably 10-- cated relatively to one side of blade I).

The various handles may be adjusted in height. Thus handle 39 (or handles 37, p engages a slot 0 in lever 0.

0 are flanges on lever 0 between which" is set a sharpening bit at, the base of which is concave as at n with cutting edges n as in Fig. 5, so that the sharpening action can .proceed in whichever radial direction the lever is swung. To enable adjustment of the bit 1 higher or lower, and to fix it to the lever, the latter has a slot 0*, taking a bolt n held by a nut 11.. The bolt head may be set in flush or nearly so by recessing, the slot 0 at 0 Fig. 4.

The operator may take parts 10 and g in respective hands, or parts 7), 30 Then after the pivotal socket i in what he thinks the most serviceable posi tion, he will rotate the lever on its axis slightly until the positions of roller or the like we, bit n and edges n are as in Figs. 3 Then the radial action follows as per arrows in Fig. l, accompanied by such rising and lOWBI'IIIg and axial rotation to and fro of the lever as the operator finds advisable to keep the bit at work. The fact of roller m contacting with one side of blade 6 enables the worker to exert pressure on the blade with the bit edge and so shave down the edge 79 readily. If the cutting action is to stop, a slightrotation or twist of the lever reversely to the arrows in Figs. 3 and 5 will 'suflice.

' Bits n may beformed of different shapes and styles generally, and one may be changed for another.

Various modifications of 'minor detail may be used without departing from what I claim. Thus framing could take the place of arm'e.

The operator canvary the pressure on edge n so as to make itli'ght or heavy at will when drawing that edge along edge 6 Having now fully described and ascer tained my said invention, and the manner in Copies of this patent may be obtained for five cents each, by addressing the which it is to be performed, I declare that what I claim is 1. A sharpening or dressing device for blades on machine wheels, comprising in combination, a lever, adjustable means adapted to be secured to the. wheel for sup porting said lever at its lower end and adapted to allow a rising and falling movement of the same, and also an oscillatory movement, handles on said lever at its upper end whereby said lever may be normally moved, and a bit adapted to act on said blade during the oscillatory and rising and falling movements. o

2. A sharpening or dressing device for blades on machine wheels, comprising a wheel clamp, having an arm, means for the adjustment on the arm of a socket or pivot, a lever to engage the socket and having handles by which to lift and lower, partially rotate, and draw to and fro the said lever, a roller or member on the lever to bear on one side of a wheel blade, and a bit or sharpener on the lever to bear on the other side of the blade as described.

3. In a device of the kind indicated, a raisable lever, a stop to limit its descent, an adjustable support allowing partial r0 tation of the lever on its axis, an adjustable bit, and a member to meet the blade to be treated on the other side from the bitwhen I i the latter is acting on the blade. 7

4;. In a device of the kind indicated, a lever formed ofan upper and a lower memher, a transverse slotted part on one mem: ber, allowing of adjustable connection of the said members, the upper member carrying a bit, and the lower member a roller or like contact piece, the lever being supported to allow it to be given sharpening motion as described. I

In witness whereof I have hereunto set my hand in the presence of two witnesses. PATRICK JOSEPH CONIVAY.

Witnesses:

GEORGE G. WE'rR, BEATRICE M, LowE.

Commissioner of Patents,

Washington, D. C. 

